Needle



Aug. 26 1924. 1,5863%;

c. SLATER NEEDLE Filed June 1, 1922 a w @1 J Patented Aug. 26, 1924.

UNITED STATES CHARLES SLATER, OF

REDDITCH, ENGLAND.

NEEDLE.

Application filed June 1,

To all whom it may concern:

Be it known that I, CHARLES, SLATER, a subject of the King of Great Britain, residing at National Works, Redditch, in the county of W'orcester, England, have invented Improvements in or Relating to Needles, of which the following is a specification.

This invention comprises certain improvements in or relating to needles, and is more particularly intended for use in connection with sailmakers needles, although it is equally applicable to other needles of a like character, for example mattress needles, packing needles, saddlers awls and needles, leather needles, collar needles, upholsterers needles, general hardware needles, and surgical needles.

The invention has for its purpose the provision of an improved needle of this character which shall be of an increased penetrative power, as compared with the sail and like needles hitherto ordinarily in use, the improved needle, by reason of such increased penetrative ower, being adapted to be passed through t e sail or other material without the aid of a palm or other auxiliary appliance.

According to the present invention the sail or like needle, instead of being of the usual triangular or square cross-section at its point end, is formed with a point end of spear or lancet form, that is to say, with a point end of a V-shape in plan and of a diamond shape in cross-section cutting edges along the opposite sides of the V, to thereby form, in passing through the materal, an aperture therein of a laterally elongated shape, adapted to facilitate the passage therethrough of the eye end of the needle and the loop of the string or the like threaded therethrough. The eye end of the needle is transversely disposed relatively to said spear or lancet shaped point end, that is to say the eye end is disposed in a plane at right angles to the plane of the point end, and said eye end is further of a more than ordinarily reduced thickness with recessed shoulders at its junction with the shank, to thereby provide a correspondingly increased thread space and further facilitate the passage of the eye and loop through said laterally elongated aperture in the material. Advantageously the flattened face of the needle may be provided with a milled or otherwise 1922. Serial No. 565,162.

roughened grip to still further facilitate the passage of the eye and loop through said aperture, this grip being located in an intermediate position adjacent the junction of the spear or lancet shaped point end with the ordinary round shank part of the needle.

In order that. this invention may be clearly understood and readily carried into practice, reference may be had to the appended explanatory sheet of drawings upon which Figure 1 is a perspective view of a sail needle constructed in accordance with the present invention.

Figure 2 is a side elevation of the same.

Figure 3 is a plan of the same.

Figures 4, 5, 6, 7, and 8 are cross-sections of the same at various points in its length, the sections being taken on the lines 4-4, 55, 6-6, 77, and 88 Fig. 3, respectively.

Figure 9 is a perspective view of a sail needle constructed in accordance with a slightly modified form of the invention.

Figure 10 is a perspective view illustrating the free passage of the eye and loop through the laterally elongated aperture formed in the material by the spear or lancet shaped point end of the needle.

In a convenient embodiment of thepresent invention the sail or like needle is formed from the usual steel wire, and comprises a shank or body part a, a spear or lancet shaped point end 5, and an eye end 0. In shaping said point end the wire is formed with opposite flats cl 0? terminating in lateral cutting edges 6 e disposed in V-formation, the apex of the V being brought to the necessary fine point and the base of the V being of a width somewhat greater than the diameter of the shank of body a. The eye end 0 is disposed in a plane at right angles to the plane of the spear or lancet-shaped point end Z), and is of a more than ordinarily reduced thickness, with recessed shoulders 0 on opposite sides of its junction with the shank of body a to thereby provide a correspondingly increased thread space on each side of the said eye end 0, for accommodation of the looped end f of the string or the like threaded through the eye 9 thereof.

In passing the needle through the sail or other material h being worked, the spear or lancet shaped point end Z) forms an aperture 2' therein of a laterally elongated shape,

somewhat wider than the diameter of the shank or body a. This laterally elongated aperture is expanded transversely by the passage of the cylindrical shank .a, and thereby permits of the easy passage of the transversely disposed eye end 0 of the needle. The increased thread space afforded on each side of the eye end 0., by reason of the reduced thickness of the latter and by reason of the recessed shoulders 0 likewise permits of the easy passage of the loop 7, so that the entire operation of passing the needle through the material is greatly facilitated, enabling the usual palm to be disposed with i by reason of such increased PGllCtlflt-lle) power.

Advantageously one or both of the flats (Z may be formed with a milled or otherwise roughened grip to still further facilitate the operation of passing the needle through the sail or other material h.

lVhat I claim as my invention and desire to secure by Letters Patent is A needle comprising a cylindrical shank, a spear or lancet shaped point end of dia mond shaped cross section, said point end having laterally cutting edges disposed in V-formation with the base of said V of a width exceeding the diameter of the shank to form in the material an aperture of laterally elongated shape, an opposed pair of flats between said point and said shank to aiford'free passage for a thread loop, an eye end of flattened form and ofmore than ordinarily reduced thickness arranged in a plane at right angles to the plane of said point end and of said flats and coacting with the cylindrical portion of the shank to widen the central portion of said aperture. Y

In witness whereof I have hereunto set my hand.

CHARLES SLATER. 

